Answer:
Atoms are neutral; they contain the same number of protons as electrons. By definition, an ion is an electrically charged particle produced by either removing electrons from a neutral atom to give a positive ion or adding electrons to a neutral atom to give a negative ion.
Explanation:
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Answer:
They are small molecules
Explanation: Hope this helps
Answer: 3.68 x 10^21 particles
Explanation:
Based on Avogadro's law:
1 mole of any substance has 6.02 x 10^23 atoms
Since 1 mole is the same as molar mass of a substance
237 g = 6.02 x 10^23 atoms
1.45g = Z atoms
To get the value of Z, cross multiply:
(Z atoms x 237g) = (6.02 x 10^23 atoms x 1.45g)
237Z = 8.729 x 10^23
Z = (8.729 x 10^23 / 237)
Z = 3.68 x 10^21
Thus, there are 3.68 x 10^21 representative particles in 1.45 g of the molecular compound.
Answer:
In this case the mass number would be 11.
Explanation:
The mass number of an element is the sum of the protons and neutrons. The number of neutrons for a given element is the only number that can change and still have the identity of the element stay the same, (because the atomic number is the number of protons).
Mass of Gold = 267.165 × 0.01552494829
⇒ 4.1477228099
The amount of heat(q) required to raise m grams of a substance-specific C from T1 to T2 is given by
q=m C (T2-T1) ........1
Given : q= 2.1200 J
the initial temperature of gold, T1 = 22.0Celcius
the final temperature of gold, T2 = 1064.4Celcius
specific heat of gold = 0.131
putting values in eq 1:
⇒ 2.1200 = m × 0.131 × (1064.4-22)
⇒ 2.1200 = m × 0.131 × 1042.4
⇒ 2.1200 / 136.5544
⇒ 0.01552494829
Since 1g= 0.01552494829 Pounds
Mass of Gold = 267.165 × 0.01552494829
⇒ 4.1477228099
Learn more about temperature here: brainly.com/question/11464844
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